Enforce noninstantiability to UtilValidate class

    /** boolean specifying by default whether or not it is okay for a String to be empty */
    public static final boolean defaultEmptyOK = true;

    /** digit characters */
    public static final String digits = "0123456789";

    /** hex digit characters */
    public static final String hexDigits = digits + "abcdefABCDEF";

    /** lower-case letter characters */
    public static final String lowercaseLetters = "abcdefghijklmnopqrstuvwxyz";

    /** upper-case letter characters */
    public static final String uppercaseLetters = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";

    /** letter characters */
    public static final String letters = lowercaseLetters + uppercaseLetters;

    /** whitespace characters */
    public static final String whitespace = " \t\n\r";

    /** decimal point character differs by language and culture */
    public static final String decimalPointDelimiter = ".";

    /** non-digit characters which are allowed in phone numbers */
    public static final String phoneNumberDelimiters = "()- ";

    /** characters which are allowed in US phone numbers */
    public static final String validUSPhoneChars = digits + phoneNumberDelimiters;

    /** characters which are allowed in international phone numbers(a leading + is OK) */
    public static final String validWorldPhoneChars = digits + phoneNumberDelimiters + "+";

    /** non-digit characters which are allowed in Social Security Numbers */
    public static final String SSNDelimiters = "- ";

    /** characters which are allowed in Social Security Numbers */
    public static final String validSSNChars = digits + SSNDelimiters;

    /** U.S. Social Security Numbers have 9 digits. They are formatted as 123-45-6789. */
    public static final int digitsInSocialSecurityNumber = 9;

    /** U.S. phone numbers have 10 digits. They are formatted as 123 456 7890 or(123) 456-7890. */
    public static final int digitsInUSPhoneNumber = 10;
    public static final int digitsInUSPhoneAreaCode = 3;
    public static final int digitsInUSPhoneMainNumber = 7;

    /** non-digit characters which are allowed in ZIP Codes */
    public static final String ZipCodeDelimiters = "-";

    /** our preferred delimiter for reformatting ZIP Codes */
    public static final String ZipCodeDelimeter = "-";

    /** characters which are allowed in Social Security Numbers */
    public static final String validZipCodeChars = digits + ZipCodeDelimiters;

    /** U.S. ZIP codes have 5 or 9 digits. They are formatted as 12345 or 12345-6789. */
    public static final int digitsInZipCode1 = 5;

    /** U.S. ZIP codes have 5 or 9 digits. They are formatted as 12345 or 12345-6789. */
    public static final int digitsInZipCode2 = 9;

    /** non-digit characters which are allowed in credit card numbers */
    public static final String creditCardDelimiters = " -";

    public static final String isNotEmptyMsg = "This field cannot be empty, please enter a value.";
    public static final String isStateCodeMsg = "The State Code must be a valid two character U.S. state abbreviation(like CA for California).";
    public static final String isContiguousStateCodeMsg = "The State Code must be a valid two character U.S. state abbreviation for one of the 48 contiguous United States (like CA for California).";
    public static final String isZipCodeMsg = "The ZIP Code must be a 5 or 9 digit U.S. ZIP Code(like 94043).";
    public static final String isUSPhoneMsg = "The US Phone must be a 10 digit U.S. phone number(like 415-555-1212).";
    public static final String isUSPhoneAreaCodeMsg = "The Phone Number Area Code must be 3 digits.";
    public static final String isUSPhoneMainNumberMsg = "The Phone Number must be 7 digits.";
    public static final String isContiguousZipCodeMsg = "Zip Code is not a valid Zip Code for one of the 48 contiguous United States .";
    public static final String isInternationalPhoneNumberMsg = "The World Phone must be a valid international phone number.";
    public static final String isSSNMsg = "The SSN must be a 9 digit U.S. social security number(like 123-45-6789).";
    public static final String isEmailMsg = "The Email must be a valid email address(like john@email.com). Please re-enter it now.";
    public static final String isAnyCardMsg = "The credit card number is not a valid card number.";
    public static final String isCreditCardPrefixMsg = " is not a valid ";
    public static final String isCreditCardSuffixMsg = " credit card number.";
    public static final String isDayMsg = "The Day must be a day number between 1 and 31. ";
    public static final String isMonthMsg = "The Month must be a month number between 1 and 12. ";
    public static final String isYearMsg = "The Year must be a 2 or 4 digit year number. ";
    public static final String isDatePrefixMsg = "The Day, Month, and Year for ";
    public static final String isDateSuffixMsg = " do not form a valid date.  Please reenter them now.";
    public static final String isHourMsg = "The Hour must be a number between 0 and 23.";
    public static final String isMinuteMsg = "The Minute must be a number between 0 and 59.";
    public static final String isSecondMsg = "The Second must be a number between 0 and 59.";
    public static final String isTimeMsg = "The Time must be a valid time formed like: HH:MM or HH:MM:SS.";
    public static final String isDateMsg = "The Date must be a valid date formed like: MM/YY, MM/YYYY, MM/DD/YY, or MM/DD/YYYY.";
    public static final String isDateAfterToday = "The Date must be a valid date after today, and formed like: MM/YY, MM/YYYY, MM/DD/YY, or MM/DD/YYYY.";
    public static final String isIntegerMsg = "The Number must be a valid unsigned whole decimal number.";
    public static final String isSignedIntegerMsg = "The Number must be a valid signed whole decimal number.";
    public static final String isLongMsg = "The Number must be a valid unsigned whole decimal number.";
    public static final String isSignedLongMsg = "The Number must be a valid signed whole decimal number.";
    public static final String isFloatMsg = "The Number must be a valid unsigned decimal number.";
    public static final String isSignedFloatMsg = "The Number must be a valid signed decimal number.";
    public static final String isSignedDoubleMsg = "The Number must be a valid signed decimal number.";

    /** An array of ints representing the number of days in each month of the year.
     *  Note: February varies depending on the year */
    public static final int[] daysInMonth = {31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};

    /** Delimiter for USStateCodes String */
    public static final String USStateCodeDelimiter = "|";

    /** Valid U.S. Postal Codes for states, territories, armed forces, etc.
     * See http://www.usps.gov/ncsc/lookups/abbr_state.txt. */
    public static final String USStateCodes = "AL|AK|AS|AZ|AR|CA|CO|CT|DE|DC|FM|FL|GA|GU|HI|ID|IL|IN|IA|KS|KY|LA|ME|MH|MD|MA|MI|MN|MS|MO|MT|NE|NV|NH|NJ|NM|NY|NC|ND|MP|OH|OK|OR|PW|PA|PR|RI|SC|SD|TN|TX|UT|VT|VI|VA|WA|WV|WI|WY|AE|AA|AE|AE|AP";

    /** Valid contiguous U.S. postal codes */
    public static final String ContiguousUSStateCodes = "AL|AZ|AR|CA|CO|CT|DE|DC|FL|GA|ID|IL|IN|IA|KS|KY|LA|ME|MD|MA|MI|MN|MS|MO|MT|NE|NV|NH|NJ|NM|NY|NC|ND|OH|OK|OR|PA|RI|SC|SD|TN|TX|UT|VT|VA|WA|WV|WI|WY";